must brood
Verbo regular: brood - brooded- brooded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must brood
you must brood
he must brood
we must brood
you must brood
they must brood 	I must be brooding
you must be brooding
he must be brooding
we must be brooding
you must be brooding
they must be brooding	I must have brooded
you must have brooded
he must have brooded
we must have brooded
you must have brooded
they must have brooded	I must have been brooding
you must have been brooding
he must have been brooding
we must have been brooding
you must have been brooding
they must have been brooding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not brood
you must not brood
he must not brood
we must not brood
you must not brood
they must not brood 	I must not be brooding
you must not be brooding
he must not be brooding
we must not be brooding
you must not be brooding
they must not be brooding	I must not have brooded
you must not have brooded
he must not have brooded
we must not have brooded
you must not have brooded
they must not have brooded	I must not have been brooding
you must not have been brooding
he must not have been brooding
we must not have been brooding
you must not have been brooding
they must not have been brooding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I brood?
must you brood?
must he brood?
must we brood?
must you brood?
must they brood? 	must I be brooding?
must you be brooding?
must he be brooding?
must we be brooding?
must you be brooding?
must they be brooding? 	must I have brooded?
must you have brooded?
must he have brooded?
must we have brooded?
must you have brooded?
must they have brooded? 	must I have been brooding?
must you have been brooding?
must he have been brooding?
must we have been brooding?
must you have been brooding?
must they have been brooding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not brood?
must you not brood?
must he not brood?
must we not brood?
must you not brood?
must they not brood? 	must I not be brooding?
must you not be brooding?
must he not be brooding?
must we not be brooding?
must you not be brooding?
must they not be brooding? 	must I not have brooded?
must you not have brooded?
must he not have brooded?
must we not have brooded?
must you not have brooded?
must they not have brooded? 	must I not have been brooding?
must you not have been brooding?
must he not have been brooding?
must we not have been brooding?
must you not have been brooding?
must they not have been brooding?